This major known and celebrated American writer, said his favorite work was his biography of Joan of Arc. And that it took him 12 years of preparation and 2 years of writing to make. Name that author.ISMark Twain! He said, "I like Joan of Arc best of all my books; and it is the best; I know it perfectly well. And besides, it furnished me seven times the pleasure afforded me by any of the others; twelve years of preparation, and two years of writing. The others needed no preparation…